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    久久久精品2019中文字幕cms,国产9日韩久久久久精品影院,成人h在线播放,日本午夜a级按摩视频

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    Main: CNC lens processing, precision parts processing

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    single lens reflex camera

    source:English website  |  Release time:2023年04月27日
    A professional camera is also called a single lens reflex camera, and a full camera is called a single lens reflex camera. The unique design of the reflectors and prisms of these cameras allows the photographer to view the image through the lens directly from the viewfinder. When light passes through the lens of the camera to the reflector, it refracts to the focus screen above and forms an image. Through the eyepiece and pentaprism, the photographer can see the scene outside the picture window. When the shutter button is pressed, the mirror springs up and the shutter curtain in front opens simultaneously. The light through the lens (image) is projected onto the sensitive component (film in traditional cameras, CCD or CMOS in digital cameras) to sensitized it

     
    久久久精品2019中文字幕cms
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